| // Copyright 2020 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "fpdfsdk/cpdfsdk_renderpage.h" |
| |
| #include <utility> |
| |
| #include "core/fpdfapi/render/cpdf_pagerendercache.h" |
| #include "core/fpdfapi/render/cpdf_pagerendercontext.h" |
| #include "core/fpdfapi/render/cpdf_progressiverenderer.h" |
| #include "core/fpdfapi/render/cpdf_renderoptions.h" |
| #include "core/fpdfdoc/cpdf_annotlist.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| #include "fpdfsdk/cpdfsdk_pauseadapter.h" |
| #include "public/fpdfview.h" |
| #include "third_party/base/ptr_util.h" |
| |
| namespace { |
| |
| void RenderPageImpl(CPDF_PageRenderContext* pContext, |
| CPDF_Page* pPage, |
| const CFX_Matrix& matrix, |
| const FX_RECT& clipping_rect, |
| int flags, |
| bool need_to_restore, |
| CPDFSDK_PauseAdapter* pause) { |
| if (!pContext->m_pOptions) |
| pContext->m_pOptions = pdfium::MakeUnique<CPDF_RenderOptions>(); |
| |
| auto& options = pContext->m_pOptions->GetOptions(); |
| options.bClearType = !!(flags & FPDF_LCD_TEXT); |
| options.bNoNativeText = !!(flags & FPDF_NO_NATIVETEXT); |
| options.bLimitedImageCache = !!(flags & FPDF_RENDER_LIMITEDIMAGECACHE); |
| options.bForceHalftone = !!(flags & FPDF_RENDER_FORCEHALFTONE); |
| options.bNoTextSmooth = !!(flags & FPDF_RENDER_NO_SMOOTHTEXT); |
| options.bNoImageSmooth = !!(flags & FPDF_RENDER_NO_SMOOTHIMAGE); |
| options.bNoPathSmooth = !!(flags & FPDF_RENDER_NO_SMOOTHPATH); |
| |
| // Grayscale output |
| if (flags & FPDF_GRAYSCALE) |
| pContext->m_pOptions->SetColorMode(CPDF_RenderOptions::kGray); |
| |
| const CPDF_OCContext::UsageType usage = |
| (flags & FPDF_PRINTING) ? CPDF_OCContext::Print : CPDF_OCContext::View; |
| pContext->m_pOptions->SetOCContext( |
| pdfium::MakeRetain<CPDF_OCContext>(pPage->GetDocument(), usage)); |
| |
| pContext->m_pDevice->SaveState(); |
| pContext->m_pDevice->SetBaseClip(clipping_rect); |
| pContext->m_pDevice->SetClip_Rect(clipping_rect); |
| pContext->m_pContext = pdfium::MakeUnique<CPDF_RenderContext>( |
| pPage->GetDocument(), pPage->m_pPageResources.Get(), |
| static_cast<CPDF_PageRenderCache*>(pPage->GetRenderCache())); |
| |
| pContext->m_pContext->AppendLayer(pPage, &matrix); |
| |
| if (flags & FPDF_ANNOT) { |
| auto pOwnedList = pdfium::MakeUnique<CPDF_AnnotList>(pPage); |
| CPDF_AnnotList* pList = pOwnedList.get(); |
| pContext->m_pAnnots = std::move(pOwnedList); |
| bool bPrinting = |
| pContext->m_pDevice->GetDeviceType() != DeviceType::kDisplay; |
| pList->DisplayAnnots(pPage, pContext->m_pContext.get(), bPrinting, &matrix, |
| false, nullptr); |
| } |
| |
| pContext->m_pRenderer = pdfium::MakeUnique<CPDF_ProgressiveRenderer>( |
| pContext->m_pContext.get(), pContext->m_pDevice.get(), |
| pContext->m_pOptions.get()); |
| pContext->m_pRenderer->Start(pause); |
| if (need_to_restore) |
| pContext->m_pDevice->RestoreState(false); |
| } |
| |
| } // namespace |
| |
| void CPDFSDK_RenderPage(CPDF_PageRenderContext* pContext, |
| CPDF_Page* pPage, |
| const CFX_Matrix& matrix, |
| const FX_RECT& clipping_rect, |
| int flags) { |
| RenderPageImpl(pContext, pPage, matrix, clipping_rect, flags, |
| /*need_to_restore=*/true, /*pause=*/nullptr); |
| } |
| |
| void CPDFSDK_RenderPageWithContext(CPDF_PageRenderContext* pContext, |
| CPDF_Page* pPage, |
| int start_x, |
| int start_y, |
| int size_x, |
| int size_y, |
| int rotate, |
| int flags, |
| bool need_to_restore, |
| CPDFSDK_PauseAdapter* pause) { |
| const FX_RECT rect(start_x, start_y, start_x + size_x, start_y + size_y); |
| RenderPageImpl(pContext, pPage, pPage->GetDisplayMatrix(rect, rotate), rect, |
| flags, need_to_restore, pause); |
| } |